linux-kernel - [PATCH v3 7/7] ACPI: property: Replicate DT-aligned u32 properties from DisCo for Imaging

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Date:   Mon, 06 Nov 2023 17:31:18 +0100
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux ACPI <linux-acpi@...r.kernel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 7/7] ACPI: property: Replicate DT-aligned u32 properties from DisCo for Imaging

From: Sakari Ailus <sakari.ailus@...ux.intel.com>

MIPI DisCo for Imaging defines properties for camera sensors that
functionally align with DT equivalents.

Replicate these properties in the ACPI device swnodes so the code
using the corresponding DT properties already does not need to be
updated to deal with their MIPI counterparts directly.

The replicated properties are:

	"mipi-img-clock-frequency" -> "clock-frequency"
	"mipi-img-led-max-current" -> "led-max-microamp"
	"mipi-img-flash-max-current" -> "flash-max-microamp"
	"mipi-img-flash-max-timeout" -> "flash-max-timeout-us"

Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
[ rjw: Changelog edits, removal of redundant braces ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/acpi/mipi-disco-img.c |   17 +++++++++++++++++
 include/acpi/acpi_bus.h       |    4 ++++
 2 files changed, 21 insertions(+)

Index: linux-pm/drivers/acpi/mipi-disco-img.c
===================================================================
--- linux-pm.orig/drivers/acpi/mipi-disco-img.c
+++ linux-pm/drivers/acpi/mipi-disco-img.c
@@ -597,6 +597,7 @@ static void init_crs_csi2_swnodes(struct
 	struct acpi_device *adev;
 	acpi_status status;
 	unsigned int i;
+	u32 val;
 	int ret;
 
 	/*
@@ -628,6 +629,22 @@ static void init_crs_csi2_swnodes(struct
 		}
 	}
 
+	if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-clock-frequency", &val))
+		swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_CLOCK_FREQUENCY)] =
+			PROPERTY_ENTRY_U32("clock-frequency", val);
+
+	if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-led-max-current", &val))
+		swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_LED_MAX_MICROAMP)] =
+			PROPERTY_ENTRY_U32("led-max-microamp", val);
+
+	if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-flash-max-current", &val))
+		swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_FLASH_MAX_MICROAMP)] =
+			PROPERTY_ENTRY_U32("flash-max-microamp", val);
+
+	if (!fwnode_property_read_u32(adev_fwnode, "mipi-img-flash-max-timeout-us", &val))
+		swnodes->dev_props[NEXT_PROPERTY(prop_index, DEV_FLASH_MAX_TIMEOUT_US)] =
+			PROPERTY_ENTRY_U32("flash-max-timeout-us", val);
+
 	status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
 	if (ACPI_FAILURE(status)) {
 		acpi_handle_info(handle, "Unable to get the path name\n");
Index: linux-pm/include/acpi/acpi_bus.h
===================================================================
--- linux-pm.orig/include/acpi/acpi_bus.h
+++ linux-pm/include/acpi/acpi_bus.h
@@ -381,6 +381,10 @@ struct acpi_gpio_mapping;
 
 enum acpi_device_swnode_dev_props {
 	ACPI_DEVICE_SWNODE_DEV_ROTATION,
+	ACPI_DEVICE_SWNODE_DEV_CLOCK_FREQUENCY,
+	ACPI_DEVICE_SWNODE_DEV_LED_MAX_MICROAMP,
+	ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_MICROAMP,
+	ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_TIMEOUT_US,
 	ACPI_DEVICE_SWNODE_DEV_NUM_OF,
 	ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES
 };